A5072265374- Luminescence Properties of Advanced Materials
- Glass properties and applications
- Nuclear materials and radiation effects
- Radiation Detection and Scintillator Technologies
- Advanced Photocatalysis Techniques
- Solid State Laser Technologies
- Radiation Shielding Materials Analysis
- Analytical Chemistry and Sensors
- Inorganic Fluorides and Related Compounds
- Chemical and Environmental Engineering Research
- Nonlinear Optical Materials Studies
- Advanced Sensor Technologies Research
- Gas Sensing Nanomaterials and Sensors
- Radiation Dose and Imaging
- Ga2O3 and related materials
- Nuclear Physics and Applications
- Phase-change materials and chalcogenides
- Catalytic Processes in Materials Science
- Advanced X-ray and CT Imaging
- Luminescence and Fluorescent Materials
- Radiation Therapy and Dosimetry
- Scientific Measurement and Uncertainty Evaluation
- bioluminescence and chemiluminescence research
- Ocular and Laser Science Research
- Hydrogen Storage and Materials
Universidad de Guanajuato
2015-2024
Universidad de León
2017
Centro de Investigaciones en Optica
2011-2014
Optical and fluorescence properties of Dy2O3-doped P2O5+K2O+MgO+Al2O3 P2O5+K2O+MgO+MgF2+Al2O3 glasses have been investigated at room temperature. From the optical absorption measurements using Judd–Ofelt (JO) theory, JO parameters obtained which are used to predict radiative 4F9/2 level Dy3+ ion. A strong yellow (Y) blue (B) emissions corresponding 4F9/2→6H13/2 4F9/2→6H15/2 transitions ions were observed in these glasses. good correlation between intensity ratio (Y/B) Ω6/Ω2 was identified....
Abstract This article reviews the basic theoretical aspects of graphene in order to contribute making teaching easier and more understandable for those who still cannot understand it an abstract way. work presents sp2 hybridization concepts from a quantum approach, which consists obtaining states sigma bonds carbon atoms orientation close another atom that is our reference point crystal lattice. Furthermore, we calculate band structure by using tight-binding model, can give us good...
Lithium borate glasses doped with three transition metals: Ag, Cd and Zn were prepared the melt-quenching method. Dopants concentrations (Li2B4O7)(100−x) (Zn[NO3]2, CdN2O6, AgNO3) (x = 0%, 1%, 5%). Doped analyzed their shielding features determined. The XRD measurements show amorphous state of glasses. Fluorescence analysis shows characteristic emission enhancement is explained. UV–vis spectra recorded in interval 200–900 nm, peaks belonging to plasmon metals. optical energy band gaps...
The fabrication and spectroscopic characterization of Ho(3+) Yb(3+) co-doped phosphate glasses, also containing silver nanoparticles (SNPs), is reported. nucleation formation nanoparticle structures in the samples are confirmed using transmission electron microscopy analyses. It found that Ho(3+)-Yb(3+)-SNP glasses exhibit an enhancement both resonant-absorption fluorescence properties when SNP concentration increased.
In this paper, the co-precipitation method was used to synthesize pure and Ag-doped LiF crystals effect of crystalline cube sizes Ag concentration on thermoluminescent (TL) response is reported. The synthesized materials were characterized by scanning electron microscopy their morphology size distributions determined. Crystal found be strongly dependent ethanol:water ratio, varying from 4.1[Formula: see text][Formula: text]m 150[Formula: text]nm for crystals. For samples, best ratio 9:1,...
In recent years, nonlinear optics field is in constant growth, particularly on the characterization and study of optical properties glass compounds. this sense, plasmonic effect caused by silver nanoparticles (SNP) (NLO) different materials was studied. Furthermore, we report experimental absorption spectra, emission Z-scan measurements both closed open apertures scanning transmission electron microscopy (STEM) to show morphology matrices nucleation SNP. Moreover, some NLO parameters were...
We report on the use of Z-scan technique with a beam composed two modes, to probe nonlinear optical properties phosphate glasses doped Er$^{3+}$-Yr$^{3+}$ and silver nanoparticles. Understanding linear these materials is crucial evaluate if they are candidates be used as gain media in lasers or amplifiers. Experiments carried out by implementing open-aperture bimodal laser pumping ($LG_{00}$ $LG_{20}$) at 908.6 nm. The analysis performed using simplifiedmodel that incorporates absorption...
Lithium triborate LiB₃O5:Eu has been prepared by precipitation assisted high-temperature solid state (PAS) reaction method using lithium hydroxide (LiOH), boric acid (H₃BO₃) and europium chloride (EuCl₃). The as powders were calcined at various temperatures. As characterized X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectrometry (EDS), UV-Vis spectrometry Photoluminescence (PL). XRD profiles of the powder products revealed presence crystalline phase 650...
Lithium tetraborate (Li2B4O7) pellets prepared by using water/solution assisted method were synthesized and characterized. Copper was used as doping material in order to enhance the Li2B4O7 thermoluminescent properties. For synthesis heating temperature parameters defined at 750 °C for 2 hr, followed 150 another hr. The materials produced five different Cu concentrations: 0.02, 0.04, 0.06, 0.08, 0.1 wt%. luminescent morphological characterizations performed X-ray diffraction (XRD), Scanning...